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Debian: CVE-2021-38506: firefox-esr, thunderbird -- security update

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Debian: CVE-2021-38506: firefox-esr, thunderbird -- security update

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
12/08/2021
Created
12/31/2021
Added
12/30/2021
Modified
01/17/2022

Description

Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user. This could lead to spoofing attacks on the browser UI including phishing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

Solution(s)

  • debian-upgrade-firefox-esr
  • debian-upgrade-thunderbird

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